Senior Back-end Engineer (Crypto and Fiat Payments) (iGaming)

SweepTech iGaming Solutions; Berlin; Vor Ort; EUR 60.000 - 80.000; Vollzeit

Zusammenfassung

SweepTech iGaming Solutions is looking for a Senior Back-end Engineer to lead the development of secure payment solutions incorporating both blockchain and fiat systems. This role requires a strong background in Node.js and TypeScript, with responsibilities including optimizing payment gateways and developing scalable backend services in a collaborative global environment.

Qualifikationen

• 5+ years of professional back-end development experience with Node.js and TypeScript in production environments.
• Proven expertise in integrating crypto payment gateways and fiat processors.
• Hands-on experience with RPC Node Providers for cross-chain operations.
• Fluency in Ukrainian or Russian and proficiency in English for technical collaboration.

Aufgaben

• Design, develop, and maintain scalable back-end services for crypto and fiat payment processing.
• Integrate and optimize payment gateways for cryptocurrencies and traditional fiat systems.
• Implement cross-chain payment solutions by interfacing with RPC Node Providers.
• Architect event-driven systems leveraging NATS, Redis, and WebSockets for real-time monitoring.
• Optimize database performance and integrity using Drizzle ORM.
• Collaborate with front-end teams to define APIs and ensure integration with applications.
• Establish CI/CD pipelines and deploy containerized services on Kubernetes clusters.
• Conduct code reviews and implement observability tools.

Kenntnisse

Node.js

TypeScript

PostgreSQL

Redis

NATS

Kubernetes

Docker

English

Ukrainian

Russian

Tools

Drizzle

GitLab

GitHub Actions

Turborepo

Nx

Jobbeschreibung

Senior Back-end Engineer (Crypto and Fiat Payments) (iGaming)

Senior Back-end Engineer (Crypto and Fiat Payments) (iGaming)

2 weeks ago Be among the first 25 applicants

Job Summary

As a

Job Summary

As a Senior Back-end Engineer, you’ll lead the development of secure, high-throughput payment solutions that bridge blockchain and fiat ecosystems for our cutting-edge Skin Gambling and Casino Platform. Your expertise will directly enable seamless cross-chain operations and drive the future of digital financial services in a collaborative, globally distributed environment.

Required Qualifications

• 5+ years of professional back-end development experience with Node.js and TypeScript in production environments.Proven expertise in integrating crypto payment gateways and fiat processors.
• Hands-on experience with integration of RPC Node Providers (e.g., Infura, Alchemy) for cross-chain operations (ERC-20/BEP-20/TRC-20 tokens).
• Proficiency in PostgreSQL, including schema design, optimization, and ORM tools (Drizzle or equivalent).
• Strong knowledge of distributed systems using Redis, message brokers (NATS/Kafka), and real-time protocols (WebSockets).
• Experience deploying microservices via Kubernetes, Docker, and CI/CD pipelines (GitLab/GitHub Actions).
• Familiarity with monorepo management tools (e.g., Turborepo, Nx).
• Fluency in Ukrainian or Russian and proficiency in English for technical collaboration in a remote/global team setting.
• Ability to work within the CET/EET time zone.
  
  

Your Advantage

• Prior integration experience with ZEN.com’s payment ecosystem.
• Experience with Skin/NFT Gambling or Online Casinos.
• Exposure to front-end technologies like React, Next.js, and state management (MobX/Redux).
• Previous experience working in a start-up environment with rapid iteration cycles.
  
  

Key Responsibilities

• Design, develop, and maintain scalable back-end services for crypto and fiat payment processing using Node.js, TypeScript, and PostgreSQL.
• Integrate and optimize payment gateways for cryptocurrencies (ERC-20/BEP-20/TRC-20) and traditional fiat systems, ensuring secure and low-latency transactions.
• Implement cross-chain payment solutions by interfacing with RPC Node Providers for deposits, withdrawals, and balance synchronization.
• Architect event-driven systems leveraging NATS, Redis, and WebSockets for real-time transaction monitoring and notifications.
• Optimize database performance and integrity using Drizzle ORM, including complex querying and indexing strategies.
• Collaborate with front-end teams to define APIs and ensure seamless integration with React/Next.js applications (full-stack exposure).
• Establish CI/CD pipelines via GitLab and Turborepo, deploying containerized services (Docker) on Kubernetes clusters.
• Conduct code reviews, troubleshoot production issues, and implement observability tools for system health monitoring.
• Drive security best practices for payment handling, including encryption, audit trails, and compliance checks.

Seniority level

• Seniority level

  Not Applicable

Employment type

• Employment type

  Full-time

Job function

• Industries

  Food and Beverage Services, Manufacturing, and Food and Beverage Manufacturing

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